Li Xu , Jiaqian Miao , Danni Xu , Xuan Mo , Junjie Wang , Sisi Chen , Bing Liu , Guangbo Ge , Xinyuan Zhu , Hongping Deng
{"title":"巨噬细胞靶向多糖纳米免疫调节剂,具有空间和时间编程的药物释放用于癌症治疗","authors":"Li Xu , Jiaqian Miao , Danni Xu , Xuan Mo , Junjie Wang , Sisi Chen , Bing Liu , Guangbo Ge , Xinyuan Zhu , Hongping Deng","doi":"10.1016/j.nantod.2025.102893","DOIUrl":null,"url":null,"abstract":"<div><div>Reprogramming tumor-associated macrophages (TAMs) represents a promising strategy to reverse tumor immunosuppressive microenvironment (TIME) for cancer immunotherapy. However, the deficiency of macrophage cells in solid tumors requires targeted drug delivery to accomplish efficient immune activation while reducing the adverse side-effects. Meanwhile, the negative feedback of TAM activation compromises immunotherapy efficacy by inducing T cell exhaustion. In this work, we report a type of macrophage-targeted polysaccharide nano-immunomodulators (Dex-RN) with spatial- and time-programmed drug release for cancer therapy by activating the TLR7/8 pathways and inhibiting the negative IDO pathway. Dex-RN exhibited high TAM targeting capability <em>in vivo</em> with 40.8 % for D10-RN and 44.3 % for D70-RN as compared with the control (19.0 %), and possessed fast TLR7/8 agonist but slow IDO inhibitor release kinetics to address the impact of the negative feedback of TLR7/8 pathway activation. Consequently, Dex-RN generated significantly enhanced macrophage M1 polarization efficiency with superior expression levels of cell surface markers and cytokines. In a 4T1 murine tumor model, Dex-RN showed enhanced tumor growth inhibition (66 %) compared with free drug mixture (43 %), and potentiated cancer immunotherapy by inducing macrophage M1 polarization, activating CD8<sup>+</sup> T cells and inhibiting Treg cells. Thus, this work highlights the conception of a spatial- and time-programmed polysaccharide nano-immunomodulator for TAM-mediated cancer immunotherapy.</div></div>","PeriodicalId":395,"journal":{"name":"Nano Today","volume":"66 ","pages":"Article 102893"},"PeriodicalIF":10.9000,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Macrophage-targeted polysaccharide nano-immunomodulators with spatial- and time-programmed drug release for cancer therapy\",\"authors\":\"Li Xu , Jiaqian Miao , Danni Xu , Xuan Mo , Junjie Wang , Sisi Chen , Bing Liu , Guangbo Ge , Xinyuan Zhu , Hongping Deng\",\"doi\":\"10.1016/j.nantod.2025.102893\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Reprogramming tumor-associated macrophages (TAMs) represents a promising strategy to reverse tumor immunosuppressive microenvironment (TIME) for cancer immunotherapy. However, the deficiency of macrophage cells in solid tumors requires targeted drug delivery to accomplish efficient immune activation while reducing the adverse side-effects. Meanwhile, the negative feedback of TAM activation compromises immunotherapy efficacy by inducing T cell exhaustion. In this work, we report a type of macrophage-targeted polysaccharide nano-immunomodulators (Dex-RN) with spatial- and time-programmed drug release for cancer therapy by activating the TLR7/8 pathways and inhibiting the negative IDO pathway. Dex-RN exhibited high TAM targeting capability <em>in vivo</em> with 40.8 % for D10-RN and 44.3 % for D70-RN as compared with the control (19.0 %), and possessed fast TLR7/8 agonist but slow IDO inhibitor release kinetics to address the impact of the negative feedback of TLR7/8 pathway activation. Consequently, Dex-RN generated significantly enhanced macrophage M1 polarization efficiency with superior expression levels of cell surface markers and cytokines. In a 4T1 murine tumor model, Dex-RN showed enhanced tumor growth inhibition (66 %) compared with free drug mixture (43 %), and potentiated cancer immunotherapy by inducing macrophage M1 polarization, activating CD8<sup>+</sup> T cells and inhibiting Treg cells. Thus, this work highlights the conception of a spatial- and time-programmed polysaccharide nano-immunomodulator for TAM-mediated cancer immunotherapy.</div></div>\",\"PeriodicalId\":395,\"journal\":{\"name\":\"Nano Today\",\"volume\":\"66 \",\"pages\":\"Article 102893\"},\"PeriodicalIF\":10.9000,\"publicationDate\":\"2025-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Today\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1748013225002658\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Today","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1748013225002658","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Macrophage-targeted polysaccharide nano-immunomodulators with spatial- and time-programmed drug release for cancer therapy
Reprogramming tumor-associated macrophages (TAMs) represents a promising strategy to reverse tumor immunosuppressive microenvironment (TIME) for cancer immunotherapy. However, the deficiency of macrophage cells in solid tumors requires targeted drug delivery to accomplish efficient immune activation while reducing the adverse side-effects. Meanwhile, the negative feedback of TAM activation compromises immunotherapy efficacy by inducing T cell exhaustion. In this work, we report a type of macrophage-targeted polysaccharide nano-immunomodulators (Dex-RN) with spatial- and time-programmed drug release for cancer therapy by activating the TLR7/8 pathways and inhibiting the negative IDO pathway. Dex-RN exhibited high TAM targeting capability in vivo with 40.8 % for D10-RN and 44.3 % for D70-RN as compared with the control (19.0 %), and possessed fast TLR7/8 agonist but slow IDO inhibitor release kinetics to address the impact of the negative feedback of TLR7/8 pathway activation. Consequently, Dex-RN generated significantly enhanced macrophage M1 polarization efficiency with superior expression levels of cell surface markers and cytokines. In a 4T1 murine tumor model, Dex-RN showed enhanced tumor growth inhibition (66 %) compared with free drug mixture (43 %), and potentiated cancer immunotherapy by inducing macrophage M1 polarization, activating CD8+ T cells and inhibiting Treg cells. Thus, this work highlights the conception of a spatial- and time-programmed polysaccharide nano-immunomodulator for TAM-mediated cancer immunotherapy.
期刊介绍:
Nano Today is a journal dedicated to publishing influential and innovative work in the field of nanoscience and technology. It covers a wide range of subject areas including biomaterials, materials chemistry, materials science, chemistry, bioengineering, biochemistry, genetics and molecular biology, engineering, and nanotechnology. The journal considers articles that inform readers about the latest research, breakthroughs, and topical issues in these fields. It provides comprehensive coverage through a mixture of peer-reviewed articles, research news, and information on key developments. Nano Today is abstracted and indexed in Science Citation Index, Ei Compendex, Embase, Scopus, and INSPEC.